Use case 2, context

[daoane]

A raw driller's log is something completely different than a geologist's log. The driller's log is not a basis that can be analysed by a geologist and validated. The content of the driller's log will be governed by the drilling circumstances and perceived rock properties that are important for drilling or by the background of the job. Examples of the former would be "unconsolidated", "sandstone", "hard rock", of the later "ore", "country rock".
If you want a geologist's log, then you'd better have one on site or sample cuttings/drill core for a proper off-site geological description.